Re: [dpdk-dev] Question about unsupported transceivers

[Alex Forster <alex@alexforster.com>]

On 10/15/15, 11:30 AM, "Alexander Duyck" <alexander.duyck@gmail.com> wrote:

>On 10/15/2015 07:46 AM, Alex Forster wrote:
>> On 10/13/15, 4:34 PM, "Alexander Duyck" <alexander.duyck@gmail.com>
>>wrote:
>>
>>> If you are using Intel's out-of-tree ixgbe driver I believe the module
>>> parameters are comma separated with one index per port.  So if you have
>>> two ports you should be passing "allow_unsupported_sfp=1,1", and for 4
>>> you would need four '1's.
>>
>> This seemed very promising. I compiled and installed the out of tree
>>ixgbe
>> driver and set the option in /etc/modprobe.d/ixgbe.conf. dmesg shows all
>> eight "allow_unsupported_sfp enabled" messages but the last four ports
>> still error out with the unsupported SFP message when running the tests.
>>
>> Before I start arbitrarily trying to patch out parts of the SFP
>> verification code in ixgbe, are there any other tips I should know?
>
>Can you send me the command you used to load the module, and the exact
>number of ixgbe ports you have in the system?  With that I could then
>verify that the command was entered correctly as it is possible there
>could still be an issue in the way the command was entered.
>
>One other possibility is that when the driver loads each load counts as
>an instance in the module parameter array.  So if for example you unbind
>the driver on one port and then later rebind it you will have consumed
>one of the values in the array.  Do it enough times and you exceed the
>bounds of the array as you entered it and it will simply use the default
>value of 0.
>
>Also the output of "ethtool -i <ethX>" would be useful to verify that
>you have the out-of-tree driver loaded and not the in kernel.
>
>- Alex
>

Er, let me try that again.

https://gist.github.com/AlexForster/f5372c5b60153d278089


Alex Forster